Charles Duhigg on the writing AI can't touch, what GLP-1s really do to your brain, and the serendipity tax

Charles Duhigg on the writing AI can't touch, what GLP-1s really do to your brain, and the serendipity tax

June 16, 2026 · 1h 4m

About this episode

Charles Duhigg discusses the nuances of writing, the effects of GLP-1s on the brain, and the concept of the serendipity tax with Auren Hoffman.

Charles Duhigg is a Pulitzer Prize-winning journalist and staff writer at The New Yorker. He is the author of The Power of Habit, Smarter Faster Better, and Supercommunicators. His work focuses on the science of habits, productivity, decision-making, and human connection. In this episode of Summation, Charles and Auren discuss: why producing the words is only 10% of an author's job, and the 90% AI can't dowhat GLP-1s actually do to the brain the serendipity tax: why you pay for five dead...

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